Power Source Circuit: Procedure

1. Disconnect the P33 certification ECU connector and P31 door control receiver connector.
   Fig 1: Identifying Harness And Connector (Certification ECU - Door Control Receiver)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage resistance according to the value(s) in the table below.

   Standard

   Symbol (Tester Connection)	Condition	Specified Condition
   RC0 (P33-29) - +5 (P31-2)	Always	Below 1 Ω
   +B1 (P33-1) - Body ground	Always	10 to 14 V
   RC0 (P33-29) - Body ground	Always	10 kΩ or higher
   E (P33-17) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Reconnect the P33 connector.
   Fig 2: Identifying P33 Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to value(s) in the table below.

   Standard voltage

   Symbol (Tester Connection)	Condition	Specified Condition
   RC0 (P33-29) - E (P33-17)	Engine switch OFF, all doors closed and transmitter switch not pressed	Below 1 V
   	Engine switch OFF, all doors closed and transmitter switch pressed	4.6 to 5.4 V
   +B1 (P33-1) - E (P33-17)	Always	10 to 14 V

NG → REPLACE CERTIFICATION ECU 

OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE